Skip to content
WanderNerd
Check a flight

Flight Reliability

AA 3644 · American Airlines

This number covered several routes in this period.

One number, several routes.

Airlines reuse flight numbers, and AA 3644 moved between routes during this period. Numbers below combine all of them, so treat them as background, not a verdict. For a cleaner answer, check the route you are actually flying.

Combined across all its routes

79%
Arrive within 15 minutes
5 min
Average arrival delay
1.7%
Cancelled
6 min early
Median arrival delay

Based on 346 historical flights. Data through May 2026.

The breakdown

On-time by weekday
  • Mon78%(49 flights)
  • Tue76%(50 flights)
  • Wed78%(51 flights)
  • Thu79%(52 flights)
  • Fri82%(49 flights)
  • Sat81%(37 flights)
  • Sun81%(52 flights)
On-time by departure window
  • 6–9 AM90%(71 flights)
  • 9 AM–12 PM94%(36 flights)
  • 12–3 PM74%(136 flights)
  • 3–6 PM80%(60 flights)
  • 6–9 PM62%(37 flights)
On-time trend by month
100%
May

Jun 73% → May 100% on time

On-time arrival percentage by month
MonthOn-time percentageFlights
June 202573%30
July 202581%31
August 202577%31
September 202587%30
October 202566%29
November 202567%12
December 202584%32
January 202690%19
February 202693%40
March 202664%56
May 2026100%22
Departures on time
83%
Diverted
0%
Flights flown
340
Months covered
12

Keep nerding

Based on 346 historical flights, because apparently we checked. Historical flight data: U.S. Bureau of Transportation Statistics, June 2025 – May 2026. Data through May 2026. How we calculate this.